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Merge branches 'pm-core', 'pm-clk', 'pm-domains' and 'pm-pci'
[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlx5 / core / main.c
1 /*
2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33 #include <linux/highmem.h>
34 #include <linux/module.h>
35 #include <linux/init.h>
36 #include <linux/errno.h>
37 #include <linux/pci.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/slab.h>
40 #include <linux/io-mapping.h>
41 #include <linux/interrupt.h>
42 #include <linux/delay.h>
43 #include <linux/mlx5/driver.h>
44 #include <linux/mlx5/cq.h>
45 #include <linux/mlx5/qp.h>
46 #include <linux/mlx5/srq.h>
47 #include <linux/debugfs.h>
48 #include <linux/kmod.h>
49 #include <linux/delay.h>
50 #include <linux/mlx5/mlx5_ifc.h>
51 #ifdef CONFIG_RFS_ACCEL
52 #include <linux/cpu_rmap.h>
53 #endif
54 #include "mlx5_core.h"
55 #include "fs_core.h"
56 #ifdef CONFIG_MLX5_CORE_EN
57 #include "eswitch.h"
58 #endif
59
60 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
61 MODULE_DESCRIPTION("Mellanox Connect-IB, ConnectX-4 core driver");
62 MODULE_LICENSE("Dual BSD/GPL");
63 MODULE_VERSION(DRIVER_VERSION);
64
65 int mlx5_core_debug_mask;
66 module_param_named(debug_mask, mlx5_core_debug_mask, int, 0644);
67 MODULE_PARM_DESC(debug_mask, "debug mask: 1 = dump cmd data, 2 = dump cmd exec time, 3 = both. Default=0");
68
69 #define MLX5_DEFAULT_PROF 2
70 static int prof_sel = MLX5_DEFAULT_PROF;
71 module_param_named(prof_sel, prof_sel, int, 0444);
72 MODULE_PARM_DESC(prof_sel, "profile selector. Valid range 0 - 2");
73
74 static LIST_HEAD(intf_list);
75 static LIST_HEAD(dev_list);
76 static DEFINE_MUTEX(intf_mutex);
77
78 struct mlx5_device_context {
79 struct list_head list;
80 struct mlx5_interface *intf;
81 void *context;
82 };
83
84 enum {
85 MLX5_ATOMIC_REQ_MODE_BE = 0x0,
86 MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS = 0x1,
87 };
88
89 static struct mlx5_profile profile[] = {
90 [0] = {
91 .mask = 0,
92 },
93 [1] = {
94 .mask = MLX5_PROF_MASK_QP_SIZE,
95 .log_max_qp = 12,
96 },
97 [2] = {
98 .mask = MLX5_PROF_MASK_QP_SIZE |
99 MLX5_PROF_MASK_MR_CACHE,
100 .log_max_qp = 17,
101 .mr_cache[0] = {
102 .size = 500,
103 .limit = 250
104 },
105 .mr_cache[1] = {
106 .size = 500,
107 .limit = 250
108 },
109 .mr_cache[2] = {
110 .size = 500,
111 .limit = 250
112 },
113 .mr_cache[3] = {
114 .size = 500,
115 .limit = 250
116 },
117 .mr_cache[4] = {
118 .size = 500,
119 .limit = 250
120 },
121 .mr_cache[5] = {
122 .size = 500,
123 .limit = 250
124 },
125 .mr_cache[6] = {
126 .size = 500,
127 .limit = 250
128 },
129 .mr_cache[7] = {
130 .size = 500,
131 .limit = 250
132 },
133 .mr_cache[8] = {
134 .size = 500,
135 .limit = 250
136 },
137 .mr_cache[9] = {
138 .size = 500,
139 .limit = 250
140 },
141 .mr_cache[10] = {
142 .size = 500,
143 .limit = 250
144 },
145 .mr_cache[11] = {
146 .size = 500,
147 .limit = 250
148 },
149 .mr_cache[12] = {
150 .size = 64,
151 .limit = 32
152 },
153 .mr_cache[13] = {
154 .size = 32,
155 .limit = 16
156 },
157 .mr_cache[14] = {
158 .size = 16,
159 .limit = 8
160 },
161 .mr_cache[15] = {
162 .size = 8,
163 .limit = 4
164 },
165 },
166 };
167
168 #define FW_INIT_TIMEOUT_MILI 2000
169 #define FW_INIT_WAIT_MS 2
170
171 static int wait_fw_init(struct mlx5_core_dev *dev, u32 max_wait_mili)
172 {
173 unsigned long end = jiffies + msecs_to_jiffies(max_wait_mili);
174 int err = 0;
175
176 while (fw_initializing(dev)) {
177 if (time_after(jiffies, end)) {
178 err = -EBUSY;
179 break;
180 }
181 msleep(FW_INIT_WAIT_MS);
182 }
183
184 return err;
185 }
186
187 static int set_dma_caps(struct pci_dev *pdev)
188 {
189 int err;
190
191 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
192 if (err) {
193 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n");
194 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
195 if (err) {
196 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n");
197 return err;
198 }
199 }
200
201 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
202 if (err) {
203 dev_warn(&pdev->dev,
204 "Warning: couldn't set 64-bit consistent PCI DMA mask\n");
205 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
206 if (err) {
207 dev_err(&pdev->dev,
208 "Can't set consistent PCI DMA mask, aborting\n");
209 return err;
210 }
211 }
212
213 dma_set_max_seg_size(&pdev->dev, 2u * 1024 * 1024 * 1024);
214 return err;
215 }
216
217 static int mlx5_pci_enable_device(struct mlx5_core_dev *dev)
218 {
219 struct pci_dev *pdev = dev->pdev;
220 int err = 0;
221
222 mutex_lock(&dev->pci_status_mutex);
223 if (dev->pci_status == MLX5_PCI_STATUS_DISABLED) {
224 err = pci_enable_device(pdev);
225 if (!err)
226 dev->pci_status = MLX5_PCI_STATUS_ENABLED;
227 }
228 mutex_unlock(&dev->pci_status_mutex);
229
230 return err;
231 }
232
233 static void mlx5_pci_disable_device(struct mlx5_core_dev *dev)
234 {
235 struct pci_dev *pdev = dev->pdev;
236
237 mutex_lock(&dev->pci_status_mutex);
238 if (dev->pci_status == MLX5_PCI_STATUS_ENABLED) {
239 pci_disable_device(pdev);
240 dev->pci_status = MLX5_PCI_STATUS_DISABLED;
241 }
242 mutex_unlock(&dev->pci_status_mutex);
243 }
244
245 static int request_bar(struct pci_dev *pdev)
246 {
247 int err = 0;
248
249 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
250 dev_err(&pdev->dev, "Missing registers BAR, aborting\n");
251 return -ENODEV;
252 }
253
254 err = pci_request_regions(pdev, DRIVER_NAME);
255 if (err)
256 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
257
258 return err;
259 }
260
261 static void release_bar(struct pci_dev *pdev)
262 {
263 pci_release_regions(pdev);
264 }
265
266 static int mlx5_enable_msix(struct mlx5_core_dev *dev)
267 {
268 struct mlx5_priv *priv = &dev->priv;
269 struct mlx5_eq_table *table = &priv->eq_table;
270 int num_eqs = 1 << MLX5_CAP_GEN(dev, log_max_eq);
271 int nvec;
272 int i;
273
274 nvec = MLX5_CAP_GEN(dev, num_ports) * num_online_cpus() +
275 MLX5_EQ_VEC_COMP_BASE;
276 nvec = min_t(int, nvec, num_eqs);
277 if (nvec <= MLX5_EQ_VEC_COMP_BASE)
278 return -ENOMEM;
279
280 priv->msix_arr = kcalloc(nvec, sizeof(*priv->msix_arr), GFP_KERNEL);
281
282 priv->irq_info = kcalloc(nvec, sizeof(*priv->irq_info), GFP_KERNEL);
283 if (!priv->msix_arr || !priv->irq_info)
284 goto err_free_msix;
285
286 for (i = 0; i < nvec; i++)
287 priv->msix_arr[i].entry = i;
288
289 nvec = pci_enable_msix_range(dev->pdev, priv->msix_arr,
290 MLX5_EQ_VEC_COMP_BASE + 1, nvec);
291 if (nvec < 0)
292 return nvec;
293
294 table->num_comp_vectors = nvec - MLX5_EQ_VEC_COMP_BASE;
295
296 return 0;
297
298 err_free_msix:
299 kfree(priv->irq_info);
300 kfree(priv->msix_arr);
301 return -ENOMEM;
302 }
303
304 static void mlx5_disable_msix(struct mlx5_core_dev *dev)
305 {
306 struct mlx5_priv *priv = &dev->priv;
307
308 pci_disable_msix(dev->pdev);
309 kfree(priv->irq_info);
310 kfree(priv->msix_arr);
311 }
312
313 struct mlx5_reg_host_endianess {
314 u8 he;
315 u8 rsvd[15];
316 };
317
318
319 #define CAP_MASK(pos, size) ((u64)((1 << (size)) - 1) << (pos))
320
321 enum {
322 MLX5_CAP_BITS_RW_MASK = CAP_MASK(MLX5_CAP_OFF_CMDIF_CSUM, 2) |
323 MLX5_DEV_CAP_FLAG_DCT,
324 };
325
326 static u16 to_fw_pkey_sz(u32 size)
327 {
328 switch (size) {
329 case 128:
330 return 0;
331 case 256:
332 return 1;
333 case 512:
334 return 2;
335 case 1024:
336 return 3;
337 case 2048:
338 return 4;
339 case 4096:
340 return 5;
341 default:
342 pr_warn("invalid pkey table size %d\n", size);
343 return 0;
344 }
345 }
346
347 static int mlx5_core_get_caps_mode(struct mlx5_core_dev *dev,
348 enum mlx5_cap_type cap_type,
349 enum mlx5_cap_mode cap_mode)
350 {
351 u8 in[MLX5_ST_SZ_BYTES(query_hca_cap_in)];
352 int out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
353 void *out, *hca_caps;
354 u16 opmod = (cap_type << 1) | (cap_mode & 0x01);
355 int err;
356
357 memset(in, 0, sizeof(in));
358 out = kzalloc(out_sz, GFP_KERNEL);
359 if (!out)
360 return -ENOMEM;
361
362 MLX5_SET(query_hca_cap_in, in, opcode, MLX5_CMD_OP_QUERY_HCA_CAP);
363 MLX5_SET(query_hca_cap_in, in, op_mod, opmod);
364 err = mlx5_cmd_exec(dev, in, sizeof(in), out, out_sz);
365 if (err)
366 goto query_ex;
367
368 err = mlx5_cmd_status_to_err_v2(out);
369 if (err) {
370 mlx5_core_warn(dev,
371 "QUERY_HCA_CAP : type(%x) opmode(%x) Failed(%d)\n",
372 cap_type, cap_mode, err);
373 goto query_ex;
374 }
375
376 hca_caps = MLX5_ADDR_OF(query_hca_cap_out, out, capability);
377
378 switch (cap_mode) {
379 case HCA_CAP_OPMOD_GET_MAX:
380 memcpy(dev->hca_caps_max[cap_type], hca_caps,
381 MLX5_UN_SZ_BYTES(hca_cap_union));
382 break;
383 case HCA_CAP_OPMOD_GET_CUR:
384 memcpy(dev->hca_caps_cur[cap_type], hca_caps,
385 MLX5_UN_SZ_BYTES(hca_cap_union));
386 break;
387 default:
388 mlx5_core_warn(dev,
389 "Tried to query dev cap type(%x) with wrong opmode(%x)\n",
390 cap_type, cap_mode);
391 err = -EINVAL;
392 break;
393 }
394 query_ex:
395 kfree(out);
396 return err;
397 }
398
399 int mlx5_core_get_caps(struct mlx5_core_dev *dev, enum mlx5_cap_type cap_type)
400 {
401 int ret;
402
403 ret = mlx5_core_get_caps_mode(dev, cap_type, HCA_CAP_OPMOD_GET_CUR);
404 if (ret)
405 return ret;
406 return mlx5_core_get_caps_mode(dev, cap_type, HCA_CAP_OPMOD_GET_MAX);
407 }
408
409 static int set_caps(struct mlx5_core_dev *dev, void *in, int in_sz, int opmod)
410 {
411 u32 out[MLX5_ST_SZ_DW(set_hca_cap_out)];
412 int err;
413
414 memset(out, 0, sizeof(out));
415
416 MLX5_SET(set_hca_cap_in, in, opcode, MLX5_CMD_OP_SET_HCA_CAP);
417 MLX5_SET(set_hca_cap_in, in, op_mod, opmod << 1);
418 err = mlx5_cmd_exec(dev, in, in_sz, out, sizeof(out));
419 if (err)
420 return err;
421
422 err = mlx5_cmd_status_to_err_v2(out);
423
424 return err;
425 }
426
427 static int handle_hca_cap_atomic(struct mlx5_core_dev *dev)
428 {
429 void *set_ctx;
430 void *set_hca_cap;
431 int set_sz = MLX5_ST_SZ_BYTES(set_hca_cap_in);
432 int req_endianness;
433 int err;
434
435 if (MLX5_CAP_GEN(dev, atomic)) {
436 err = mlx5_core_get_caps(dev, MLX5_CAP_ATOMIC);
437 if (err)
438 return err;
439 } else {
440 return 0;
441 }
442
443 req_endianness =
444 MLX5_CAP_ATOMIC(dev,
445 supported_atomic_req_8B_endianess_mode_1);
446
447 if (req_endianness != MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS)
448 return 0;
449
450 set_ctx = kzalloc(set_sz, GFP_KERNEL);
451 if (!set_ctx)
452 return -ENOMEM;
453
454 set_hca_cap = MLX5_ADDR_OF(set_hca_cap_in, set_ctx, capability);
455
456 /* Set requestor to host endianness */
457 MLX5_SET(atomic_caps, set_hca_cap, atomic_req_8B_endianess_mode,
458 MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS);
459
460 err = set_caps(dev, set_ctx, set_sz, MLX5_SET_HCA_CAP_OP_MOD_ATOMIC);
461
462 kfree(set_ctx);
463 return err;
464 }
465
466 static int handle_hca_cap(struct mlx5_core_dev *dev)
467 {
468 void *set_ctx = NULL;
469 struct mlx5_profile *prof = dev->profile;
470 int err = -ENOMEM;
471 int set_sz = MLX5_ST_SZ_BYTES(set_hca_cap_in);
472 void *set_hca_cap;
473
474 set_ctx = kzalloc(set_sz, GFP_KERNEL);
475 if (!set_ctx)
476 goto query_ex;
477
478 err = mlx5_core_get_caps(dev, MLX5_CAP_GENERAL);
479 if (err)
480 goto query_ex;
481
482 set_hca_cap = MLX5_ADDR_OF(set_hca_cap_in, set_ctx,
483 capability);
484 memcpy(set_hca_cap, dev->hca_caps_cur[MLX5_CAP_GENERAL],
485 MLX5_ST_SZ_BYTES(cmd_hca_cap));
486
487 mlx5_core_dbg(dev, "Current Pkey table size %d Setting new size %d\n",
488 mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(dev, pkey_table_size)),
489 128);
490 /* we limit the size of the pkey table to 128 entries for now */
491 MLX5_SET(cmd_hca_cap, set_hca_cap, pkey_table_size,
492 to_fw_pkey_sz(128));
493
494 if (prof->mask & MLX5_PROF_MASK_QP_SIZE)
495 MLX5_SET(cmd_hca_cap, set_hca_cap, log_max_qp,
496 prof->log_max_qp);
497
498 /* disable cmdif checksum */
499 MLX5_SET(cmd_hca_cap, set_hca_cap, cmdif_checksum, 0);
500
501 MLX5_SET(cmd_hca_cap, set_hca_cap, log_uar_page_sz, PAGE_SHIFT - 12);
502
503 err = set_caps(dev, set_ctx, set_sz,
504 MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE);
505
506 query_ex:
507 kfree(set_ctx);
508 return err;
509 }
510
511 static int set_hca_ctrl(struct mlx5_core_dev *dev)
512 {
513 struct mlx5_reg_host_endianess he_in;
514 struct mlx5_reg_host_endianess he_out;
515 int err;
516
517 if (!mlx5_core_is_pf(dev))
518 return 0;
519
520 memset(&he_in, 0, sizeof(he_in));
521 he_in.he = MLX5_SET_HOST_ENDIANNESS;
522 err = mlx5_core_access_reg(dev, &he_in, sizeof(he_in),
523 &he_out, sizeof(he_out),
524 MLX5_REG_HOST_ENDIANNESS, 0, 1);
525 return err;
526 }
527
528 int mlx5_core_enable_hca(struct mlx5_core_dev *dev, u16 func_id)
529 {
530 u32 out[MLX5_ST_SZ_DW(enable_hca_out)];
531 u32 in[MLX5_ST_SZ_DW(enable_hca_in)];
532 int err;
533
534 memset(in, 0, sizeof(in));
535 MLX5_SET(enable_hca_in, in, opcode, MLX5_CMD_OP_ENABLE_HCA);
536 MLX5_SET(enable_hca_in, in, function_id, func_id);
537 memset(out, 0, sizeof(out));
538
539 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
540 if (err)
541 return err;
542
543 return mlx5_cmd_status_to_err_v2(out);
544 }
545
546 int mlx5_core_disable_hca(struct mlx5_core_dev *dev, u16 func_id)
547 {
548 u32 out[MLX5_ST_SZ_DW(disable_hca_out)];
549 u32 in[MLX5_ST_SZ_DW(disable_hca_in)];
550 int err;
551
552 memset(in, 0, sizeof(in));
553 MLX5_SET(disable_hca_in, in, opcode, MLX5_CMD_OP_DISABLE_HCA);
554 MLX5_SET(disable_hca_in, in, function_id, func_id);
555 memset(out, 0, sizeof(out));
556 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
557 if (err)
558 return err;
559
560 return mlx5_cmd_status_to_err_v2(out);
561 }
562
563 cycle_t mlx5_read_internal_timer(struct mlx5_core_dev *dev)
564 {
565 u32 timer_h, timer_h1, timer_l;
566
567 timer_h = ioread32be(&dev->iseg->internal_timer_h);
568 timer_l = ioread32be(&dev->iseg->internal_timer_l);
569 timer_h1 = ioread32be(&dev->iseg->internal_timer_h);
570 if (timer_h != timer_h1) /* wrap around */
571 timer_l = ioread32be(&dev->iseg->internal_timer_l);
572
573 return (cycle_t)timer_l | (cycle_t)timer_h1 << 32;
574 }
575
576 static int mlx5_irq_set_affinity_hint(struct mlx5_core_dev *mdev, int i)
577 {
578 struct mlx5_priv *priv = &mdev->priv;
579 struct msix_entry *msix = priv->msix_arr;
580 int irq = msix[i + MLX5_EQ_VEC_COMP_BASE].vector;
581 int numa_node = priv->numa_node;
582 int err;
583
584 if (!zalloc_cpumask_var(&priv->irq_info[i].mask, GFP_KERNEL)) {
585 mlx5_core_warn(mdev, "zalloc_cpumask_var failed");
586 return -ENOMEM;
587 }
588
589 cpumask_set_cpu(cpumask_local_spread(i, numa_node),
590 priv->irq_info[i].mask);
591
592 err = irq_set_affinity_hint(irq, priv->irq_info[i].mask);
593 if (err) {
594 mlx5_core_warn(mdev, "irq_set_affinity_hint failed,irq 0x%.4x",
595 irq);
596 goto err_clear_mask;
597 }
598
599 return 0;
600
601 err_clear_mask:
602 free_cpumask_var(priv->irq_info[i].mask);
603 return err;
604 }
605
606 static void mlx5_irq_clear_affinity_hint(struct mlx5_core_dev *mdev, int i)
607 {
608 struct mlx5_priv *priv = &mdev->priv;
609 struct msix_entry *msix = priv->msix_arr;
610 int irq = msix[i + MLX5_EQ_VEC_COMP_BASE].vector;
611
612 irq_set_affinity_hint(irq, NULL);
613 free_cpumask_var(priv->irq_info[i].mask);
614 }
615
616 static int mlx5_irq_set_affinity_hints(struct mlx5_core_dev *mdev)
617 {
618 int err;
619 int i;
620
621 for (i = 0; i < mdev->priv.eq_table.num_comp_vectors; i++) {
622 err = mlx5_irq_set_affinity_hint(mdev, i);
623 if (err)
624 goto err_out;
625 }
626
627 return 0;
628
629 err_out:
630 for (i--; i >= 0; i--)
631 mlx5_irq_clear_affinity_hint(mdev, i);
632
633 return err;
634 }
635
636 static void mlx5_irq_clear_affinity_hints(struct mlx5_core_dev *mdev)
637 {
638 int i;
639
640 for (i = 0; i < mdev->priv.eq_table.num_comp_vectors; i++)
641 mlx5_irq_clear_affinity_hint(mdev, i);
642 }
643
644 int mlx5_vector2eqn(struct mlx5_core_dev *dev, int vector, int *eqn,
645 unsigned int *irqn)
646 {
647 struct mlx5_eq_table *table = &dev->priv.eq_table;
648 struct mlx5_eq *eq, *n;
649 int err = -ENOENT;
650
651 spin_lock(&table->lock);
652 list_for_each_entry_safe(eq, n, &table->comp_eqs_list, list) {
653 if (eq->index == vector) {
654 *eqn = eq->eqn;
655 *irqn = eq->irqn;
656 err = 0;
657 break;
658 }
659 }
660 spin_unlock(&table->lock);
661
662 return err;
663 }
664 EXPORT_SYMBOL(mlx5_vector2eqn);
665
666 struct mlx5_eq *mlx5_eqn2eq(struct mlx5_core_dev *dev, int eqn)
667 {
668 struct mlx5_eq_table *table = &dev->priv.eq_table;
669 struct mlx5_eq *eq;
670
671 spin_lock(&table->lock);
672 list_for_each_entry(eq, &table->comp_eqs_list, list)
673 if (eq->eqn == eqn) {
674 spin_unlock(&table->lock);
675 return eq;
676 }
677
678 spin_unlock(&table->lock);
679
680 return ERR_PTR(-ENOENT);
681 }
682
683 static void free_comp_eqs(struct mlx5_core_dev *dev)
684 {
685 struct mlx5_eq_table *table = &dev->priv.eq_table;
686 struct mlx5_eq *eq, *n;
687
688 #ifdef CONFIG_RFS_ACCEL
689 if (dev->rmap) {
690 free_irq_cpu_rmap(dev->rmap);
691 dev->rmap = NULL;
692 }
693 #endif
694 spin_lock(&table->lock);
695 list_for_each_entry_safe(eq, n, &table->comp_eqs_list, list) {
696 list_del(&eq->list);
697 spin_unlock(&table->lock);
698 if (mlx5_destroy_unmap_eq(dev, eq))
699 mlx5_core_warn(dev, "failed to destroy EQ 0x%x\n",
700 eq->eqn);
701 kfree(eq);
702 spin_lock(&table->lock);
703 }
704 spin_unlock(&table->lock);
705 }
706
707 static int alloc_comp_eqs(struct mlx5_core_dev *dev)
708 {
709 struct mlx5_eq_table *table = &dev->priv.eq_table;
710 char name[MLX5_MAX_IRQ_NAME];
711 struct mlx5_eq *eq;
712 int ncomp_vec;
713 int nent;
714 int err;
715 int i;
716
717 INIT_LIST_HEAD(&table->comp_eqs_list);
718 ncomp_vec = table->num_comp_vectors;
719 nent = MLX5_COMP_EQ_SIZE;
720 #ifdef CONFIG_RFS_ACCEL
721 dev->rmap = alloc_irq_cpu_rmap(ncomp_vec);
722 if (!dev->rmap)
723 return -ENOMEM;
724 #endif
725 for (i = 0; i < ncomp_vec; i++) {
726 eq = kzalloc(sizeof(*eq), GFP_KERNEL);
727 if (!eq) {
728 err = -ENOMEM;
729 goto clean;
730 }
731
732 #ifdef CONFIG_RFS_ACCEL
733 irq_cpu_rmap_add(dev->rmap,
734 dev->priv.msix_arr[i + MLX5_EQ_VEC_COMP_BASE].vector);
735 #endif
736 snprintf(name, MLX5_MAX_IRQ_NAME, "mlx5_comp%d", i);
737 err = mlx5_create_map_eq(dev, eq,
738 i + MLX5_EQ_VEC_COMP_BASE, nent, 0,
739 name, &dev->priv.uuari.uars[0]);
740 if (err) {
741 kfree(eq);
742 goto clean;
743 }
744 mlx5_core_dbg(dev, "allocated completion EQN %d\n", eq->eqn);
745 eq->index = i;
746 spin_lock(&table->lock);
747 list_add_tail(&eq->list, &table->comp_eqs_list);
748 spin_unlock(&table->lock);
749 }
750
751 return 0;
752
753 clean:
754 free_comp_eqs(dev);
755 return err;
756 }
757
758 static int mlx5_core_set_issi(struct mlx5_core_dev *dev)
759 {
760 u32 query_in[MLX5_ST_SZ_DW(query_issi_in)];
761 u32 query_out[MLX5_ST_SZ_DW(query_issi_out)];
762 u32 set_in[MLX5_ST_SZ_DW(set_issi_in)];
763 u32 set_out[MLX5_ST_SZ_DW(set_issi_out)];
764 int err;
765 u32 sup_issi;
766
767 memset(query_in, 0, sizeof(query_in));
768 memset(query_out, 0, sizeof(query_out));
769
770 MLX5_SET(query_issi_in, query_in, opcode, MLX5_CMD_OP_QUERY_ISSI);
771
772 err = mlx5_cmd_exec_check_status(dev, query_in, sizeof(query_in),
773 query_out, sizeof(query_out));
774 if (err) {
775 if (((struct mlx5_outbox_hdr *)query_out)->status ==
776 MLX5_CMD_STAT_BAD_OP_ERR) {
777 pr_debug("Only ISSI 0 is supported\n");
778 return 0;
779 }
780
781 pr_err("failed to query ISSI\n");
782 return err;
783 }
784
785 sup_issi = MLX5_GET(query_issi_out, query_out, supported_issi_dw0);
786
787 if (sup_issi & (1 << 1)) {
788 memset(set_in, 0, sizeof(set_in));
789 memset(set_out, 0, sizeof(set_out));
790
791 MLX5_SET(set_issi_in, set_in, opcode, MLX5_CMD_OP_SET_ISSI);
792 MLX5_SET(set_issi_in, set_in, current_issi, 1);
793
794 err = mlx5_cmd_exec_check_status(dev, set_in, sizeof(set_in),
795 set_out, sizeof(set_out));
796 if (err) {
797 pr_err("failed to set ISSI=1\n");
798 return err;
799 }
800
801 dev->issi = 1;
802
803 return 0;
804 } else if (sup_issi & (1 << 0) || !sup_issi) {
805 return 0;
806 }
807
808 return -ENOTSUPP;
809 }
810
811 static void mlx5_add_device(struct mlx5_interface *intf, struct mlx5_priv *priv)
812 {
813 struct mlx5_device_context *dev_ctx;
814 struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv);
815
816 dev_ctx = kmalloc(sizeof(*dev_ctx), GFP_KERNEL);
817 if (!dev_ctx)
818 return;
819
820 dev_ctx->intf = intf;
821 dev_ctx->context = intf->add(dev);
822
823 if (dev_ctx->context) {
824 spin_lock_irq(&priv->ctx_lock);
825 list_add_tail(&dev_ctx->list, &priv->ctx_list);
826 spin_unlock_irq(&priv->ctx_lock);
827 } else {
828 kfree(dev_ctx);
829 }
830 }
831
832 static void mlx5_remove_device(struct mlx5_interface *intf, struct mlx5_priv *priv)
833 {
834 struct mlx5_device_context *dev_ctx;
835 struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv);
836
837 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
838 if (dev_ctx->intf == intf) {
839 spin_lock_irq(&priv->ctx_lock);
840 list_del(&dev_ctx->list);
841 spin_unlock_irq(&priv->ctx_lock);
842
843 intf->remove(dev, dev_ctx->context);
844 kfree(dev_ctx);
845 return;
846 }
847 }
848
849 static int mlx5_register_device(struct mlx5_core_dev *dev)
850 {
851 struct mlx5_priv *priv = &dev->priv;
852 struct mlx5_interface *intf;
853
854 mutex_lock(&intf_mutex);
855 list_add_tail(&priv->dev_list, &dev_list);
856 list_for_each_entry(intf, &intf_list, list)
857 mlx5_add_device(intf, priv);
858 mutex_unlock(&intf_mutex);
859
860 return 0;
861 }
862
863 static void mlx5_unregister_device(struct mlx5_core_dev *dev)
864 {
865 struct mlx5_priv *priv = &dev->priv;
866 struct mlx5_interface *intf;
867
868 mutex_lock(&intf_mutex);
869 list_for_each_entry(intf, &intf_list, list)
870 mlx5_remove_device(intf, priv);
871 list_del(&priv->dev_list);
872 mutex_unlock(&intf_mutex);
873 }
874
875 int mlx5_register_interface(struct mlx5_interface *intf)
876 {
877 struct mlx5_priv *priv;
878
879 if (!intf->add || !intf->remove)
880 return -EINVAL;
881
882 mutex_lock(&intf_mutex);
883 list_add_tail(&intf->list, &intf_list);
884 list_for_each_entry(priv, &dev_list, dev_list)
885 mlx5_add_device(intf, priv);
886 mutex_unlock(&intf_mutex);
887
888 return 0;
889 }
890 EXPORT_SYMBOL(mlx5_register_interface);
891
892 void mlx5_unregister_interface(struct mlx5_interface *intf)
893 {
894 struct mlx5_priv *priv;
895
896 mutex_lock(&intf_mutex);
897 list_for_each_entry(priv, &dev_list, dev_list)
898 mlx5_remove_device(intf, priv);
899 list_del(&intf->list);
900 mutex_unlock(&intf_mutex);
901 }
902 EXPORT_SYMBOL(mlx5_unregister_interface);
903
904 void *mlx5_get_protocol_dev(struct mlx5_core_dev *mdev, int protocol)
905 {
906 struct mlx5_priv *priv = &mdev->priv;
907 struct mlx5_device_context *dev_ctx;
908 unsigned long flags;
909 void *result = NULL;
910
911 spin_lock_irqsave(&priv->ctx_lock, flags);
912
913 list_for_each_entry(dev_ctx, &mdev->priv.ctx_list, list)
914 if ((dev_ctx->intf->protocol == protocol) &&
915 dev_ctx->intf->get_dev) {
916 result = dev_ctx->intf->get_dev(dev_ctx->context);
917 break;
918 }
919
920 spin_unlock_irqrestore(&priv->ctx_lock, flags);
921
922 return result;
923 }
924 EXPORT_SYMBOL(mlx5_get_protocol_dev);
925
926 static int mlx5_pci_init(struct mlx5_core_dev *dev, struct mlx5_priv *priv)
927 {
928 struct pci_dev *pdev = dev->pdev;
929 int err = 0;
930
931 pci_set_drvdata(dev->pdev, dev);
932 strncpy(priv->name, dev_name(&pdev->dev), MLX5_MAX_NAME_LEN);
933 priv->name[MLX5_MAX_NAME_LEN - 1] = 0;
934
935 mutex_init(&priv->pgdir_mutex);
936 INIT_LIST_HEAD(&priv->pgdir_list);
937 spin_lock_init(&priv->mkey_lock);
938
939 mutex_init(&priv->alloc_mutex);
940
941 priv->numa_node = dev_to_node(&dev->pdev->dev);
942
943 priv->dbg_root = debugfs_create_dir(dev_name(&pdev->dev), mlx5_debugfs_root);
944 if (!priv->dbg_root)
945 return -ENOMEM;
946
947 err = mlx5_pci_enable_device(dev);
948 if (err) {
949 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
950 goto err_dbg;
951 }
952
953 err = request_bar(pdev);
954 if (err) {
955 dev_err(&pdev->dev, "error requesting BARs, aborting\n");
956 goto err_disable;
957 }
958
959 pci_set_master(pdev);
960
961 err = set_dma_caps(pdev);
962 if (err) {
963 dev_err(&pdev->dev, "Failed setting DMA capabilities mask, aborting\n");
964 goto err_clr_master;
965 }
966
967 dev->iseg_base = pci_resource_start(dev->pdev, 0);
968 dev->iseg = ioremap(dev->iseg_base, sizeof(*dev->iseg));
969 if (!dev->iseg) {
970 err = -ENOMEM;
971 dev_err(&pdev->dev, "Failed mapping initialization segment, aborting\n");
972 goto err_clr_master;
973 }
974
975 return 0;
976
977 err_clr_master:
978 pci_clear_master(dev->pdev);
979 release_bar(dev->pdev);
980 err_disable:
981 mlx5_pci_disable_device(dev);
982
983 err_dbg:
984 debugfs_remove(priv->dbg_root);
985 return err;
986 }
987
988 static void mlx5_pci_close(struct mlx5_core_dev *dev, struct mlx5_priv *priv)
989 {
990 iounmap(dev->iseg);
991 pci_clear_master(dev->pdev);
992 release_bar(dev->pdev);
993 mlx5_pci_disable_device(dev);
994 debugfs_remove(priv->dbg_root);
995 }
996
997 #define MLX5_IB_MOD "mlx5_ib"
998 static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv)
999 {
1000 struct pci_dev *pdev = dev->pdev;
1001 int err;
1002
1003 mutex_lock(&dev->intf_state_mutex);
1004 if (test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state)) {
1005 dev_warn(&dev->pdev->dev, "%s: interface is up, NOP\n",
1006 __func__);
1007 goto out;
1008 }
1009
1010 dev_info(&pdev->dev, "firmware version: %d.%d.%d\n", fw_rev_maj(dev),
1011 fw_rev_min(dev), fw_rev_sub(dev));
1012
1013 /* on load removing any previous indication of internal error, device is
1014 * up
1015 */
1016 dev->state = MLX5_DEVICE_STATE_UP;
1017
1018 err = mlx5_cmd_init(dev);
1019 if (err) {
1020 dev_err(&pdev->dev, "Failed initializing command interface, aborting\n");
1021 goto out_err;
1022 }
1023
1024 err = wait_fw_init(dev, FW_INIT_TIMEOUT_MILI);
1025 if (err) {
1026 dev_err(&dev->pdev->dev, "Firmware over %d MS in initializing state, aborting\n",
1027 FW_INIT_TIMEOUT_MILI);
1028 goto out_err;
1029 }
1030
1031 mlx5_pagealloc_init(dev);
1032
1033 err = mlx5_core_enable_hca(dev, 0);
1034 if (err) {
1035 dev_err(&pdev->dev, "enable hca failed\n");
1036 goto err_pagealloc_cleanup;
1037 }
1038
1039 err = mlx5_core_set_issi(dev);
1040 if (err) {
1041 dev_err(&pdev->dev, "failed to set issi\n");
1042 goto err_disable_hca;
1043 }
1044
1045 err = mlx5_satisfy_startup_pages(dev, 1);
1046 if (err) {
1047 dev_err(&pdev->dev, "failed to allocate boot pages\n");
1048 goto err_disable_hca;
1049 }
1050
1051 err = set_hca_ctrl(dev);
1052 if (err) {
1053 dev_err(&pdev->dev, "set_hca_ctrl failed\n");
1054 goto reclaim_boot_pages;
1055 }
1056
1057 err = handle_hca_cap(dev);
1058 if (err) {
1059 dev_err(&pdev->dev, "handle_hca_cap failed\n");
1060 goto reclaim_boot_pages;
1061 }
1062
1063 err = handle_hca_cap_atomic(dev);
1064 if (err) {
1065 dev_err(&pdev->dev, "handle_hca_cap_atomic failed\n");
1066 goto reclaim_boot_pages;
1067 }
1068
1069 err = mlx5_satisfy_startup_pages(dev, 0);
1070 if (err) {
1071 dev_err(&pdev->dev, "failed to allocate init pages\n");
1072 goto reclaim_boot_pages;
1073 }
1074
1075 err = mlx5_pagealloc_start(dev);
1076 if (err) {
1077 dev_err(&pdev->dev, "mlx5_pagealloc_start failed\n");
1078 goto reclaim_boot_pages;
1079 }
1080
1081 err = mlx5_cmd_init_hca(dev);
1082 if (err) {
1083 dev_err(&pdev->dev, "init hca failed\n");
1084 goto err_pagealloc_stop;
1085 }
1086
1087 mlx5_start_health_poll(dev);
1088
1089 err = mlx5_query_hca_caps(dev);
1090 if (err) {
1091 dev_err(&pdev->dev, "query hca failed\n");
1092 goto err_stop_poll;
1093 }
1094
1095 err = mlx5_query_board_id(dev);
1096 if (err) {
1097 dev_err(&pdev->dev, "query board id failed\n");
1098 goto err_stop_poll;
1099 }
1100
1101 err = mlx5_enable_msix(dev);
1102 if (err) {
1103 dev_err(&pdev->dev, "enable msix failed\n");
1104 goto err_stop_poll;
1105 }
1106
1107 err = mlx5_eq_init(dev);
1108 if (err) {
1109 dev_err(&pdev->dev, "failed to initialize eq\n");
1110 goto disable_msix;
1111 }
1112
1113 err = mlx5_alloc_uuars(dev, &priv->uuari);
1114 if (err) {
1115 dev_err(&pdev->dev, "Failed allocating uar, aborting\n");
1116 goto err_eq_cleanup;
1117 }
1118
1119 err = mlx5_start_eqs(dev);
1120 if (err) {
1121 dev_err(&pdev->dev, "Failed to start pages and async EQs\n");
1122 goto err_free_uar;
1123 }
1124
1125 err = alloc_comp_eqs(dev);
1126 if (err) {
1127 dev_err(&pdev->dev, "Failed to alloc completion EQs\n");
1128 goto err_stop_eqs;
1129 }
1130
1131 err = mlx5_irq_set_affinity_hints(dev);
1132 if (err)
1133 dev_err(&pdev->dev, "Failed to alloc affinity hint cpumask\n");
1134
1135 MLX5_INIT_DOORBELL_LOCK(&priv->cq_uar_lock);
1136
1137 mlx5_init_cq_table(dev);
1138 mlx5_init_qp_table(dev);
1139 mlx5_init_srq_table(dev);
1140 mlx5_init_mkey_table(dev);
1141
1142 err = mlx5_init_fs(dev);
1143 if (err) {
1144 dev_err(&pdev->dev, "Failed to init flow steering\n");
1145 goto err_fs;
1146 }
1147 #ifdef CONFIG_MLX5_CORE_EN
1148 err = mlx5_eswitch_init(dev);
1149 if (err) {
1150 dev_err(&pdev->dev, "eswitch init failed %d\n", err);
1151 goto err_reg_dev;
1152 }
1153 #endif
1154
1155 err = mlx5_sriov_init(dev);
1156 if (err) {
1157 dev_err(&pdev->dev, "sriov init failed %d\n", err);
1158 goto err_sriov;
1159 }
1160
1161 err = mlx5_register_device(dev);
1162 if (err) {
1163 dev_err(&pdev->dev, "mlx5_register_device failed %d\n", err);
1164 goto err_reg_dev;
1165 }
1166
1167 err = request_module_nowait(MLX5_IB_MOD);
1168 if (err)
1169 pr_info("failed request module on %s\n", MLX5_IB_MOD);
1170
1171 clear_bit(MLX5_INTERFACE_STATE_DOWN, &dev->intf_state);
1172 set_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state);
1173 out:
1174 mutex_unlock(&dev->intf_state_mutex);
1175
1176 return 0;
1177
1178 err_sriov:
1179 if (mlx5_sriov_cleanup(dev))
1180 dev_err(&dev->pdev->dev, "sriov cleanup failed\n");
1181
1182 #ifdef CONFIG_MLX5_CORE_EN
1183 mlx5_eswitch_cleanup(dev->priv.eswitch);
1184 #endif
1185 err_reg_dev:
1186 mlx5_cleanup_fs(dev);
1187 err_fs:
1188 mlx5_cleanup_mkey_table(dev);
1189 mlx5_cleanup_srq_table(dev);
1190 mlx5_cleanup_qp_table(dev);
1191 mlx5_cleanup_cq_table(dev);
1192 mlx5_irq_clear_affinity_hints(dev);
1193 free_comp_eqs(dev);
1194
1195 err_stop_eqs:
1196 mlx5_stop_eqs(dev);
1197
1198 err_free_uar:
1199 mlx5_free_uuars(dev, &priv->uuari);
1200
1201 err_eq_cleanup:
1202 mlx5_eq_cleanup(dev);
1203
1204 disable_msix:
1205 mlx5_disable_msix(dev);
1206
1207 err_stop_poll:
1208 mlx5_stop_health_poll(dev);
1209 if (mlx5_cmd_teardown_hca(dev)) {
1210 dev_err(&dev->pdev->dev, "tear_down_hca failed, skip cleanup\n");
1211 goto out_err;
1212 }
1213
1214 err_pagealloc_stop:
1215 mlx5_pagealloc_stop(dev);
1216
1217 reclaim_boot_pages:
1218 mlx5_reclaim_startup_pages(dev);
1219
1220 err_disable_hca:
1221 mlx5_core_disable_hca(dev, 0);
1222
1223 err_pagealloc_cleanup:
1224 mlx5_pagealloc_cleanup(dev);
1225 mlx5_cmd_cleanup(dev);
1226
1227 out_err:
1228 dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR;
1229 mutex_unlock(&dev->intf_state_mutex);
1230
1231 return err;
1232 }
1233
1234 static int mlx5_unload_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv)
1235 {
1236 int err = 0;
1237
1238 err = mlx5_sriov_cleanup(dev);
1239 if (err) {
1240 dev_warn(&dev->pdev->dev, "%s: sriov cleanup failed - abort\n",
1241 __func__);
1242 return err;
1243 }
1244
1245 mutex_lock(&dev->intf_state_mutex);
1246 if (test_bit(MLX5_INTERFACE_STATE_DOWN, &dev->intf_state)) {
1247 dev_warn(&dev->pdev->dev, "%s: interface is down, NOP\n",
1248 __func__);
1249 goto out;
1250 }
1251 mlx5_unregister_device(dev);
1252 #ifdef CONFIG_MLX5_CORE_EN
1253 mlx5_eswitch_cleanup(dev->priv.eswitch);
1254 #endif
1255
1256 mlx5_cleanup_fs(dev);
1257 mlx5_cleanup_mkey_table(dev);
1258 mlx5_cleanup_srq_table(dev);
1259 mlx5_cleanup_qp_table(dev);
1260 mlx5_cleanup_cq_table(dev);
1261 mlx5_irq_clear_affinity_hints(dev);
1262 free_comp_eqs(dev);
1263 mlx5_stop_eqs(dev);
1264 mlx5_free_uuars(dev, &priv->uuari);
1265 mlx5_eq_cleanup(dev);
1266 mlx5_disable_msix(dev);
1267 mlx5_stop_health_poll(dev);
1268 err = mlx5_cmd_teardown_hca(dev);
1269 if (err) {
1270 dev_err(&dev->pdev->dev, "tear_down_hca failed, skip cleanup\n");
1271 goto out;
1272 }
1273 mlx5_pagealloc_stop(dev);
1274 mlx5_reclaim_startup_pages(dev);
1275 mlx5_core_disable_hca(dev, 0);
1276 mlx5_pagealloc_cleanup(dev);
1277 mlx5_cmd_cleanup(dev);
1278
1279 out:
1280 clear_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state);
1281 set_bit(MLX5_INTERFACE_STATE_DOWN, &dev->intf_state);
1282 mutex_unlock(&dev->intf_state_mutex);
1283 return err;
1284 }
1285
1286 void mlx5_core_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event,
1287 unsigned long param)
1288 {
1289 struct mlx5_priv *priv = &dev->priv;
1290 struct mlx5_device_context *dev_ctx;
1291 unsigned long flags;
1292
1293 spin_lock_irqsave(&priv->ctx_lock, flags);
1294
1295 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
1296 if (dev_ctx->intf->event)
1297 dev_ctx->intf->event(dev, dev_ctx->context, event, param);
1298
1299 spin_unlock_irqrestore(&priv->ctx_lock, flags);
1300 }
1301
1302 struct mlx5_core_event_handler {
1303 void (*event)(struct mlx5_core_dev *dev,
1304 enum mlx5_dev_event event,
1305 void *data);
1306 };
1307
1308
1309 static int init_one(struct pci_dev *pdev,
1310 const struct pci_device_id *id)
1311 {
1312 struct mlx5_core_dev *dev;
1313 struct mlx5_priv *priv;
1314 int err;
1315
1316 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1317 if (!dev) {
1318 dev_err(&pdev->dev, "kzalloc failed\n");
1319 return -ENOMEM;
1320 }
1321 priv = &dev->priv;
1322 priv->pci_dev_data = id->driver_data;
1323
1324 pci_set_drvdata(pdev, dev);
1325
1326 if (prof_sel < 0 || prof_sel >= ARRAY_SIZE(profile)) {
1327 pr_warn("selected profile out of range, selecting default (%d)\n",
1328 MLX5_DEFAULT_PROF);
1329 prof_sel = MLX5_DEFAULT_PROF;
1330 }
1331 dev->profile = &profile[prof_sel];
1332 dev->pdev = pdev;
1333 dev->event = mlx5_core_event;
1334
1335 INIT_LIST_HEAD(&priv->ctx_list);
1336 spin_lock_init(&priv->ctx_lock);
1337 mutex_init(&dev->pci_status_mutex);
1338 mutex_init(&dev->intf_state_mutex);
1339 err = mlx5_pci_init(dev, priv);
1340 if (err) {
1341 dev_err(&pdev->dev, "mlx5_pci_init failed with error code %d\n", err);
1342 goto clean_dev;
1343 }
1344
1345 err = mlx5_health_init(dev);
1346 if (err) {
1347 dev_err(&pdev->dev, "mlx5_health_init failed with error code %d\n", err);
1348 goto close_pci;
1349 }
1350
1351 err = mlx5_load_one(dev, priv);
1352 if (err) {
1353 dev_err(&pdev->dev, "mlx5_load_one failed with error code %d\n", err);
1354 goto clean_health;
1355 }
1356
1357 return 0;
1358
1359 clean_health:
1360 mlx5_health_cleanup(dev);
1361 close_pci:
1362 mlx5_pci_close(dev, priv);
1363 clean_dev:
1364 pci_set_drvdata(pdev, NULL);
1365 kfree(dev);
1366
1367 return err;
1368 }
1369
1370 static void remove_one(struct pci_dev *pdev)
1371 {
1372 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1373 struct mlx5_priv *priv = &dev->priv;
1374
1375 if (mlx5_unload_one(dev, priv)) {
1376 dev_err(&dev->pdev->dev, "mlx5_unload_one failed\n");
1377 mlx5_health_cleanup(dev);
1378 return;
1379 }
1380 mlx5_health_cleanup(dev);
1381 mlx5_pci_close(dev, priv);
1382 pci_set_drvdata(pdev, NULL);
1383 kfree(dev);
1384 }
1385
1386 static pci_ers_result_t mlx5_pci_err_detected(struct pci_dev *pdev,
1387 pci_channel_state_t state)
1388 {
1389 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1390 struct mlx5_priv *priv = &dev->priv;
1391
1392 dev_info(&pdev->dev, "%s was called\n", __func__);
1393 mlx5_enter_error_state(dev);
1394 mlx5_unload_one(dev, priv);
1395 mlx5_pci_disable_device(dev);
1396 return state == pci_channel_io_perm_failure ?
1397 PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
1398 }
1399
1400 static pci_ers_result_t mlx5_pci_slot_reset(struct pci_dev *pdev)
1401 {
1402 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1403 int err = 0;
1404
1405 dev_info(&pdev->dev, "%s was called\n", __func__);
1406
1407 err = mlx5_pci_enable_device(dev);
1408 if (err) {
1409 dev_err(&pdev->dev, "%s: mlx5_pci_enable_device failed with error code: %d\n"
1410 , __func__, err);
1411 return PCI_ERS_RESULT_DISCONNECT;
1412 }
1413 pci_set_master(pdev);
1414 pci_set_power_state(pdev, PCI_D0);
1415 pci_restore_state(pdev);
1416
1417 return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1418 }
1419
1420 void mlx5_disable_device(struct mlx5_core_dev *dev)
1421 {
1422 mlx5_pci_err_detected(dev->pdev, 0);
1423 }
1424
1425 /* wait for the device to show vital signs by waiting
1426 * for the health counter to start counting.
1427 */
1428 static int wait_vital(struct pci_dev *pdev)
1429 {
1430 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1431 struct mlx5_core_health *health = &dev->priv.health;
1432 const int niter = 100;
1433 u32 last_count = 0;
1434 u32 count;
1435 int i;
1436
1437 for (i = 0; i < niter; i++) {
1438 count = ioread32be(health->health_counter);
1439 if (count && count != 0xffffffff) {
1440 if (last_count && last_count != count) {
1441 dev_info(&pdev->dev, "Counter value 0x%x after %d iterations\n", count, i);
1442 return 0;
1443 }
1444 last_count = count;
1445 }
1446 msleep(50);
1447 }
1448
1449 return -ETIMEDOUT;
1450 }
1451
1452 static void mlx5_pci_resume(struct pci_dev *pdev)
1453 {
1454 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1455 struct mlx5_priv *priv = &dev->priv;
1456 int err;
1457
1458 dev_info(&pdev->dev, "%s was called\n", __func__);
1459
1460 pci_save_state(pdev);
1461 err = wait_vital(pdev);
1462 if (err) {
1463 dev_err(&pdev->dev, "%s: wait_vital timed out\n", __func__);
1464 return;
1465 }
1466
1467 err = mlx5_load_one(dev, priv);
1468 if (err)
1469 dev_err(&pdev->dev, "%s: mlx5_load_one failed with error code: %d\n"
1470 , __func__, err);
1471 else
1472 dev_info(&pdev->dev, "%s: device recovered\n", __func__);
1473 }
1474
1475 static const struct pci_error_handlers mlx5_err_handler = {
1476 .error_detected = mlx5_pci_err_detected,
1477 .slot_reset = mlx5_pci_slot_reset,
1478 .resume = mlx5_pci_resume
1479 };
1480
1481 static void shutdown(struct pci_dev *pdev)
1482 {
1483 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1484 struct mlx5_priv *priv = &dev->priv;
1485
1486 dev_info(&pdev->dev, "Shutdown was called\n");
1487 /* Notify mlx5 clients that the kernel is being shut down */
1488 set_bit(MLX5_INTERFACE_STATE_SHUTDOWN, &dev->intf_state);
1489 mlx5_unload_one(dev, priv);
1490 mlx5_pci_disable_device(dev);
1491 }
1492
1493 static const struct pci_device_id mlx5_core_pci_table[] = {
1494 { PCI_VDEVICE(MELLANOX, 0x1011) }, /* Connect-IB */
1495 { PCI_VDEVICE(MELLANOX, 0x1012), MLX5_PCI_DEV_IS_VF}, /* Connect-IB VF */
1496 { PCI_VDEVICE(MELLANOX, 0x1013) }, /* ConnectX-4 */
1497 { PCI_VDEVICE(MELLANOX, 0x1014), MLX5_PCI_DEV_IS_VF}, /* ConnectX-4 VF */
1498 { PCI_VDEVICE(MELLANOX, 0x1015) }, /* ConnectX-4LX */
1499 { PCI_VDEVICE(MELLANOX, 0x1016), MLX5_PCI_DEV_IS_VF}, /* ConnectX-4LX VF */
1500 { PCI_VDEVICE(MELLANOX, 0x1017) }, /* ConnectX-5, PCIe 3.0 */
1501 { PCI_VDEVICE(MELLANOX, 0x1018), MLX5_PCI_DEV_IS_VF}, /* ConnectX-5 VF */
1502 { PCI_VDEVICE(MELLANOX, 0x1019) }, /* ConnectX-5, PCIe 4.0 */
1503 { 0, }
1504 };
1505
1506 MODULE_DEVICE_TABLE(pci, mlx5_core_pci_table);
1507
1508 static struct pci_driver mlx5_core_driver = {
1509 .name = DRIVER_NAME,
1510 .id_table = mlx5_core_pci_table,
1511 .probe = init_one,
1512 .remove = remove_one,
1513 .shutdown = shutdown,
1514 .err_handler = &mlx5_err_handler,
1515 .sriov_configure = mlx5_core_sriov_configure,
1516 };
1517
1518 static int __init init(void)
1519 {
1520 int err;
1521
1522 mlx5_register_debugfs();
1523
1524 err = pci_register_driver(&mlx5_core_driver);
1525 if (err)
1526 goto err_debug;
1527
1528 #ifdef CONFIG_MLX5_CORE_EN
1529 mlx5e_init();
1530 #endif
1531
1532 return 0;
1533
1534 err_debug:
1535 mlx5_unregister_debugfs();
1536 return err;
1537 }
1538
1539 static void __exit cleanup(void)
1540 {
1541 #ifdef CONFIG_MLX5_CORE_EN
1542 mlx5e_cleanup();
1543 #endif
1544 pci_unregister_driver(&mlx5_core_driver);
1545 mlx5_unregister_debugfs();
1546 }
1547
1548 module_init(init);
1549 module_exit(cleanup);
Linux kernel - Deliverables
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